Feed mechanism for roller-m ills



(No Model.)

O. POISTER.

FEED MECHANISM FOR ROLLER MILLS." 7 No. 869,551. v Petented Sept. 6, 1887.

llllllllllllllllllll O Nrrnn STATES Pnrnnr FFHQEG CHARLES POISTER, OF ABILENE, KANSAS.

FEED MECHANISM FOR ROLLER-MILLS.

SPECIFICATION forming part of Letters Patent No. 369,551, dated September 6, 1887.

Application filed December 18, 1886. Serial No. 221,966. (No model.) 7

To ctZZ whom it may concern:

Be it known that I, CHARLES POISTER, a citizen of the'United States, and a resident of Abilene, in the county of Dickinson and State of Kansas, have invented certain new and useful Improvements in Feed Mechanisms for Roller-Mills; and I do hereby declare that the following is a full, clear, and exact descriptionof the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had "to the accompanying drawings, which form a part of this specification, and in which- Figure 1 'is a longitudinal vertical sectional view of my improved feeder for roller-mills. Fig. 2 is an end view of the same, showing the end piece of the casing removed; and Fig. 3 is a horizontal sectional view on line 00 a", Fig. 1.

Similar numerals of reference indicate corresponding parts in all the figures.

My invention has relation to that class of feeding devices for roller-mills; and it consists in the improved construction and combinations of parts of the same, as hereinafter more fully described and claimed.

In the accompanying drawings, the numeral 1 indicates the outside casing of the feeder and mill, and the feed-hopper, 2, is secured in the top of this casing, having its lower contracted cnd' placed over the middle of the shaker or shaking feed-board. This shaker, 3, consists of two side pieces, 4, having straight upper edges, and having their lower edges cut out to form each two diverging inclined edges, 5, having diverginglydnclined bottoms 6,secured with their edges to them.

The middle of the box formed by the side pieces and the bottoms of the shaker is divided by a transverse partition, 7, and arms 8 are pivoted to the inner sides of the side pieces, near their ends, and are pivoted Withtheirupper ends tothe surrounding casing, so that the shaker may swing below the lower end of the feed-hopper.

The under side of one of the bottoms of the shaker is provided with blocks 9-one on each sidewhich are engaged by cams or eccentrics 10 upon a shaft, 11,journaled transversely in the surrounding casing, and which may force the shaker toward one end of the casing when the shaft is revolved, and two coiled springs, 12, are secured to the opposite end of theshaker by means of books 13, and to the end ofthe sur rounding casing, serving to draw the shaker back again when it has been forced. away from that end of the casing by the cams, so that the shaker may be reciprocated or shaken below the lower end of the feed-hopper by the said camsandspringsbyrevolvingtheshaft. These cams upon the shaft are only of suliicient size to move the shaker or feeder a very slight distance, and as the shaft is caused to revolve at a high rate of speed, the shaker is only moved sufficiently to cause the grain which is fed into it from the feed hopper above to be evenly divided by the partition through its middle portion. The supply of grain to the i'eedhopper is regulated by any of the ordinary means for doing such work; but as they form no part of the invention they are not shown in the drawin s.

a number of blocks, 14, gradually increasing in length and height toward the middles of the bottoms,are secured in a transverse series upon each bottom, and the upper or inner ends of these blocks are slightly curved toward the middle of the bottoms, as shownat 15, while thelower or-outer ends of the blocks are sharpened from the sides to form sharp edges 16.

It will now be seen that as the grain falls from the feed-hopper down upon the bottoms of the shaker the strpam ofgrain will be divided, falling evenly upon the two divergingly'inclined bottoms, and in passing down to therollers of the mill the stream of grain will be spread in striking the curved upper ends of the blocks, being spread toward the-sides of the shaker, while the grain will at the same time pass between the blocks, thestream of grain thus falling upon the bottoms of the shaker passing from the open ends of the same down upon the rollers in a thin even sheet. a

The inwardlycurved upper edges of the blocks will catch enough of the grain as will pass between them, and at the same time,.0n account of the blocks gradually decreasing in length and height, the stream of grain will be deflected and divided toward the sides, so that the stream will be spread into a perfect even sheet at the end of the inclined bottom.

In the drawings the shaker is shown with two divergingly-inclined bottoms and having two delivery ends, roller-mills being generally constructed with two sets of rollers; but the shaker may be constructed with only one in-' clined bottom and with one delivery end, if the mill has only one set of rollers, the operation of the shaker being the same.

The feed-hopper may be of any desired construction, and may be suspended in any desired manner and have any suitable means for giving it its shaking motion, the principal featnrein my invention being the series of blocks upon the inclined bottoms.

With suitable modificationsin the operating mechanism the shaker may also be employed in screening-and fanning mills,for the purpose of spreading the grain to be screened and fanned.

Having thus described myinvention, I claim and desire to secure by Letters Patent of the United States- 1. A shaking feeder for grain, having an inclined bottom provided with a transverse series of blocks gradually increasing inheight and length toward the middle and having inwardly-curved upper ends, as and for the purinclined bottoms providedeach with a series of blocks increasing in length and height toward the middle and having inwardly-curved upper ends, arms for suspending said shaker, ashaft j ournaled transversely below the shaker and having cams or eccentrics engaging blocks upon the bottom of the shaker, rocking the same, and springs attached to the end of the shaker and to the outer casing, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

CHARLES POIS'IER.

Witnesses:

MAXWELL B. HAMMOND, ALBERT B. OOULsON. 

